Distillation flask

November 1, 2021

In a laboratory the distillation flask or Florentine flask is a glass material designed for the uniform heating of substances and solutions.

What is it?

It is a piece of equipment that is part of the glassware. It is a bottle with a long neck and a spherical body designed for the uniform heating of different substances. It is generally made of glass or special plastic.

Its rounded base allows its contents to be shaken without spilling any substance out of the container. However, its rounded base makes it prone to tipping and spilling.

Sometimes it has a lateral detachment tube that is located in the neck of the flask. This tube allows the gases to escape towards the condenser during distillation.


  • It is made of borosilicate glass and depending on its intended use, it comes in different thicknesses.
  • It has a spherical base and a long, cylindrical neck.
  • Some have a descending lateral nozzle which allows vapors to escape during distillation.
  • Due to its frustoconical shape, the loss of liquid by stirring or evaporation is avoided.
  • It can be covered with a hydrophobic cotton ball or a frosted plug.

How is it used?

  1. To use it we must anchor a metal or lead weight at its base.
  2. When heated, it is placed on a ring that must be secured by means of a double nut to the universal support. A wire mesh should be placed between the ring and the flask.
  3. The balloon can be attached to the universal holder by holding it around the neck with a test tube holder.
  4. When making the connections for distillation, we must ensure that they are completely sealed. Some vapors on contact with the lighter can cause combustion reactions.
  5. We must not allow the balloon to distill until it is dry. The residues of a mixture may contain flammable peroxides.

Its rounded base makes it susceptible to tip-overs, spills, and drops. Caution should be exercised when using it.

Dr. Loony Davis5
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Born and raised in Brussels in an English family, I have always lived in a multicultural environment. After several work experiences in marketing and communication, I came to Smart Water Magazine, which I describe as the most exciting challenge of my career.
I am a person with great restlessness and curiosity to learn, discover what I do not know, as well as reinvent myself daily, someone who is curious about life and wants to know. I enjoy sharing knowledge.
This is my personal project but I also collaborate in other blogs, it is the case, the most important web on water currently exists in the US, if you are interested you can read my articles here.

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